1.Qualitative and quantitative analysis of Rhodobryum giganteum by using nonlinear oscillating chemical fingerprint technique.
Rui-Ping YE ; Hai-Xia WANG ; Jie-Rong PEI ; Ze-Shuai ZHANG ; Tong-Chuan SUO ; Wen-Long LI ; Zheng LI
China Journal of Chinese Materia Medica 2020;45(10):2406-2410
A new method for qualitative and quantitative analysis of Rhodobryum giganteum by using the nonlinear oscillating chemical was established for improving the quality control standard of R. giganteum. Its potential(E)/time(t) curve was recorded by electrochemical workstation in the oscillation reaction system of BrO~-_3-Ce(SO_4)_2-H_2SO_4-malonic acid/tartaric acid. The nonlinear oscillating chemical fingerprints were investigated for repeatability, and it was found that the RSD values of the four characteristic parameters of R. giganteum were less than 4.1%, indicating a good repeatability and high precision of this experiment. After optimizing the experimental parameters such as particle size, rotation speed and temperature, a new method based on nonlinear oscillating chemical was used for qualitative and quantitative analysis of R. giganteum. The results showed that there was a good linear relationship between the induction time/the period of oscillation and the dosage of herbs(0.1-1.1 g), with the relative coefficients of 0.978 and 0.975, respectively. Besides, the highest potential showed a nonlinear relationship with the dosage of herbs, with the relative coefficient of 0.999. This method was also used to discriminate the R. giganteum and R. roseum. They were similar in appearance, but their fingerprints were quite different. Independent sample t test results showed that there were significant differences in the oscillation time, the maximum amplitude and the induction time, providing a basis for the identification of the basic sources of Herba Rhodobryi Rasei.
Quality Control
2.Case Study on Improvement of Hospital Foodservice by Introduction of FMEA Techniques: Focus on Food Delivery Service Quality and Customer Satisfaction.
Hye Jin KIM ; Jeong Im HONG ; Gyu Jin HEO
Journal of the Korean Dietetic Association 2015;21(1):25-36
In this study, we attempted to improve hospital food delivery service quality and customer satisfaction by using FMEA (Failure Mode and Effect Analysis), which is applied to the quality control of products in manufacturing plants. Subjective food delivery service quality improvement was judged based on a 5-point likert scale. Traditional FMEA uses an RPN (Risk priority number) to evaluate the risk level of a component or process. The RPN index was determined by calculating the product of severity, occurrence, and detection indexes. In our results, total RPN value (P<0.01) significantly decreased after FMEA introduction, whereas customer satisfaction (P<0.001) and food delivery service quality (P<0.001) significantly increased. Specifically, foodservice errors (P<0.01) and loss cost (P<0.01) were significantly improved by FMEA introduction. Taken together, we suggest that FMEA reduces critical activities and errors in foodservice delivery caused by simple priority selection.
Quality Control
;
Quality Improvement
3.Annual Report on External Quality Assessment of Immunoassay Subcommittee in Korean Clinical Laboratory Survey (2004).
Hyon Suk KIM ; Hwan Sub LIM ; Young Ran KIM ; Han Soo CHO ; Hea Sun CHUN ; Seob SHIN ; Young Soon JUNG ; Oh Hun KWON ; Deog An KIM ; Young Kee KIM ; Jin Q KIM ; Young Kyu SUN
Journal of Laboratory Medicine and Quality Assurance 2005;27(1):91-110
Two trials of external quality assessment were performed in 2004 as previous year. Thirteen test items of immunoassay with ten control materials were surveyed. The response rate of external quality assessment for Immunoassay Subcommittee were 94.4% and 98.6%. Ten control materials were consisted of 8 home-made pooled sera and 2 commercial control sera (LyphoCheck, BioRad, USA). The results are summarized as follows. 1. Laboratories participating in external quality control program of immunoassay were 259 laboratories and the response rate were 94.4% and 98.6% in 2004. 2. Chemiluminiscence immunoassay autoanalyzers were most widely used in the field of immunoassay testing. 3. A new test item CA125 was introduced in this year from the second trial of external quality survey. 4. Still some test items show big variations of the test results of the same control material according to autoanalyzers. The quality of the participating laboratories seems to be thought being continuously improved. And, some new methods of the statistic analysis and some standardization protocols were considered to be introduced in the surveillance systems.
Immunoassay*
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Quality Control
4.Self analysis of external quality control data of Kyungpook National University Hospital.
Jung Sun YANG ; Eun Sook CHUNG ; Kyung Eun SONG ; Jang Soo SUH ; Won Kil LEE ; In Sik LEE ; Yong Suk KIM ; Jay Sik KIM
Korean Journal of Clinical Pathology 1991;11(1):49-71
No abstract available.
Gyeongsangbuk-do*
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Quality Control*
5.A Comparative Study on the Interlaboratory Triglyceride Determination.
Myung Jin KIM ; Tae Young KIM ; Won Sang YOO
Korean Circulation Journal 1979;9(1):23-25
Quality control survey was done on the plasma triglyceride determination of six laboratories and following results were obtained. 1) Coefficients of variation were less than 5% in 3 laboratories and over 10% in one laboratory. 2) High interlaboratory variation was inferred from the mean values ranging from 104.0~136. 4mg% (sample A) with enzyme method and 44.7~65.3 (Sample B) with acetylaceton method. 3) Establishment of normal plasma triglyceride level in Koreans and supervised quality control by the authority seemed to be urgent.
Plasma
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Quality Control
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Triglycerides*
6.Annual Report on External Quality Assessment of Immunoassay Subcommittee in Korea (2003).
Hyon Suk KIM ; Hwan Sub LIM ; Young Lan KIM ; Han Soo CHO ; Hea Sun CHUN ; Seob SHIN ; Young Soon JUNG ; Oh Hun KWON ; Deog An KIM ; Young Kee KIM ; Jin Q KIM ; Young Kyu SUN
Journal of Laboratory Medicine and Quality Assurance 2004;26(1):103-201
Two trials of external quality assessment were performed in 2003. Thirteen test items of immunoassay with ten control materials were surveyed. The response rate of external quality assessment for Immunoassay Subcommittee were 93.8% and 92.8%. Ten control materials were consisted of 8 home-made pooled sera and 2 commercial control sera. The results are summarized as follows. 1. Laboratories participating in external quality control program of immunoassay were 259 laboratories and the response rate were 93.8% and 92.8% in 2003. 2. Chemiluminiscence immunoassay autoanalyzer was now widely introduced comparing to previous years and now it is the most popular analyzer in the field of immunoassay testing. 3. Still some test items show big variations of the test results of the same control material according to autoanalyzer. Generally the quality of the participating laboratories seems to be thought being improved. And in the following years, new planning of the statistic analysis and some standardization protocols could be introduced.
Immunoassay*
;
Korea*
;
Quality Control
7.Finding Interesting Genes Using Reliability in Various Gene Expression Models.
Eun Kyung LEE ; Dianne COOK ; Heike HOFFMAN
Genomics & Informatics 2011;9(1):28-36
Most statistical methods for finding interesting genes are focusing on the summary values with large fold-changes or large variations. Very few methods consider the probe level data. We developed a new measure to detect reliability that incorporates the probe level data. This reliability measure is useful for exploring the microarray data without ignoring the probe level data. It is easy to calculate, and it can be used for all the other statistical methods as a good guideline to find real differentially expressed genes. Instead of filtering out genes before the analysis, we use whole genes in the analysis and make decisions with new reliability measures.
Gene Expression
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Quality Control
8.Quality Assessment of Ultrasonographic Equipment Using an ATS-539 Multipurpose Phantom.
Pyo Nyun KIM ; Joo Won LIM ; Hyun Cheol KIM ; Young Cheol YOON ; Deuk Je SUNG ; Min Hoan MOON ; Jeong Sook KIM ; Jong Chan KIM
Journal of the Korean Radiological Society 2008;58(5):533-541
PURPOSE: To determine the rate of congruence and to standardize assessment of US (ultrasound) phantom images with the use of an ATS-539 multipurpose phantom for US equipment currently utilized in Korea MATERIALS AND METHODS: US phantom images were scanned with a 3.0-5.0 MHz convex transducer and were digitized by use of an analogue-digital converter. Members of a committee with consent evaluated the US phantom images from 108 types of ultrasound equipment. The dead zone, vertical and horizontal measurement, axial/lateral resolution, focal zone, sensitivity, functional resolution and gray scale/dynamic range were evaluated. Congruence or incongruence of ultrasound equipment was determined based on the results of dead zone, axial/lateral resolution and gray scale/dynamic range measurements. Other factors were evaluated for the possibility as criteria with the use of the Mann-Whitney U test and receiver operator characteristic (ROC) curve analysis. RESULTS: The dead zone, axial/lateral resolution and gray scale/dynamic range were 91.7%, 94.4% and 76.9%, respectively, for suitable US equipment. Considering all three factors, 78 types of ultrasound equipment were passed. The congruence rate of focal zone and functional resolution were 62.4% and 69.3% of the US equipment, respectively. CONCLUSION: Of the US equipment, 72.2% of the equipment was acceptable based on the dead zone, axial/lateral resolution, and gray scale/dynamic range measurements as determined with the use of an ATS-539 phantom. Focal zone and 8 mm-functional resolution can be useful as a standard in the assessment of a US phantom image.
Korea
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Quality Control
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Transducers
9.Development and Application of a Laboratory-Developed Quality Control Program for Blood Glucose Monitoring Systems: A Single Institute Experience.
Hae Il PARK ; Jongbo CHO ; Sang Min LEE ; Jang Won SON ; Sung Rae KIM ; Soonjib YOO ; Seong Su LEE
Annals of Laboratory Medicine 2017;37(4):362-364
No abstract available.
Blood Glucose*
;
Quality Control*
10.Development and Application of a Laboratory-Developed Quality Control Program for Blood Glucose Monitoring Systems: A Single Institute Experience.
Hae Il PARK ; Jongbo CHO ; Sang Min LEE ; Jang Won SON ; Sung Rae KIM ; Soonjib YOO ; Seong Su LEE
Annals of Laboratory Medicine 2017;37(4):362-364
No abstract available.
Blood Glucose*
;
Quality Control*